干旱区生态环境知识资源中心(Arid): 水分胁迫下AM真菌对新排煤矸石上玉米生长的影响

Arid

	水分胁迫下AM真菌对新排煤矸石上玉米生长的影响
其他题名	Effect of arbuscular mycorrhizal fungi on the maize growing in the newly discharged coal mine spoil under water stress
	赵仁鑫; 郭伟; 毕娜; 郭江源; 付瑞英; 赵文静; 王芳; 赵吉
来源期刊	安全与环境学报
ISSN	1009-6094
出版年	2016
卷号	16 期号:1 页码:365-371
中文摘要	为了草原生态系统煤矸石废弃地的生态重建和植被恢复,采用温室盆栽试验,在正常供水(基质含水量为田间最大持水量的80%)和水分胁迫(基质含水量分别为60%和40%)条件下研究了接种丛枝菌根(Arbuscular Mycorrhizal,AM)真菌Rhizophagus intraradices(RI)对新排放煤矸石上玉米(Zea mays L.)菌根侵染率、生物量、矿质营养吸收、C∶N∶P生态化学计量比和植株水分特征的影响。结果表明,不同水分条件下接种AM真菌后玉米均具有较高的菌根侵染率,并随基质含水量降低逐渐增加。接种RI未显著影响3种水分条件下煤矸石上玉米的生长,显著增加了玉米对P的吸收量,显著调节了玉米的C∶N∶P生态化学计量比,符合生长速率假设。随水分胁迫程度增加,玉米生物量和营养元素吸收量降低。水分胁迫下,接种RI显著增加了玉米叶片鲜重含水量,加快了植株复水速率,改善了玉米的水分状况,表明RI对增强新排煤矸石中玉米抗旱性具有潜在的作用。初步证明了AM真菌对于增强玉米适应煤矸石基质的复合逆境,以及在干旱半干旱草原生态系统煤矸石废弃地上重建植被均具有一定的潜在作用。
英文摘要	In this paper, we would like to bring about the results of a greenhouse pot experiment we have done to investigate the impacts of the arbuscular mycorrhizal (AM) fungi Rhizophagus intraradices (RI) on the growth of maize (Zea mays L.), such as the mycorrhizal colonization, the plant biomass, the nutrient uptake, the C:N:P stoichiometric, and its water status in newly discharged coal mine spoil under well-watered and water stress conditions (whose substrate water contents were to 80%, 60%, and 40% of field water holding capacity, respectively). The aim of our simulated research is to provide a technical basis for the revegetation of the coal mine spoil banks in the grassland ecosystem. The results of our simulated research show that the maize have high root AM colonization rates and the AM rates gradually increase with the decrease of the substrate water content, with an average infection rate of 70.25%, 72.81%, and 79.67%, respectively. However, the inoculation with RI has no noticeable effect on the shoot, root, and the total dry weights of maize under different water conditions, while RI can significantly increase the root to shoot ratios of maize under the water content of 60% and 40%. On the other hand, the colonization by RI can significantly increase the P uptake of maize in the substrate under water stress and has different effects on the uptake of N, K, Ca, and Mg. With the increase of the water stress, the inoculation tends to decrease the biomass and nutrient uptake of maize. Moreover, the inoculation with AM fungi also significantly decreases the ratio of C:P and N:P, adjusting the C:N:P stoichiometric and supporting the growth rate hypothesis. Furthermore, the inoculation with RI increases water content of fresh leaf weight of the maize, accelerates plant rehydration rate, and improves water status of maize growth under the water stress, indicating that RI has a potential role in increasing the drought resistance of maize in recent discharged coal mine trash. The experiment demonstrates that AM fungi has a potential role for maize to enhance the ability to adapt the composite adversity of coal mine spoil, and provides a direct basis for the application of AM technology to the restoration of the vegetation of coal mine spoil banks in the grassland of arid and semiarid area.
中文关键词	环境学 ; 丛枝菌根真菌 ; 水分胁迫 ; 煤矸石 ; 玉米 ; 生长
英文关键词	environmentalology arbuscular mycorrhizal fungi water stress coal mine spoil maize growth
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5652427
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233895
作者单位	内蒙古大学环境与资源学院, 呼和浩特, 内蒙古 010021, 中国
推荐引用方式 GB/T 7714	赵仁鑫,郭伟,毕娜,等. 水分胁迫下AM真菌对新排煤矸石上玉米生长的影响[J],2016,16(1):365-371.
APA	赵仁鑫.,郭伟.,毕娜.,郭江源.,付瑞英.,...&赵吉.(2016).水分胁迫下AM真菌对新排煤矸石上玉米生长的影响.安全与环境学报,16(1),365-371.
MLA	赵仁鑫,et al."水分胁迫下AM真菌对新排煤矸石上玉米生长的影响".安全与环境学报 16.1(2016):365-371.